Archetype Earth should be able to handle Ollerus with ease, (solar system?) level physicals that she can ramp up, Marble Phantasm, reproducing all natural phenomena possible on nasu earth (which if we take this to it's logical extreme, possibly means every magecraft on earth).
And stats aside, she actually has one of the best immortalities in Japanese Media. MEODP, a power that brings about the end recorded within the Root, couldn't even kill her off for good. That's coming back from conceptual levels of erasure. That easily beats any "physical" method you could use to kill her.
She stored the concept of death of Gaia in her event storage while in Luminary, which is technically a weaker form than AE.
Whether that keeps her from getting beaten up by 50/50 Othinus's reality-warping though, is something I will probably save for someone else to take a crack at (Though as far as physicals go, AE should be superior).